diff --git a/d3/index.d.ts b/d3/index.d.ts
index 4aac203696..b96791c7d9 100644
--- a/d3/index.d.ts
+++ b/d3/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for d3JS
+// Type definitions for d3JS v3.5.17
 // Project: http://d3js.org/
 // Definitions by: Alex Ford <https://github.com/gustavderdrache>, Boris Yankov <https://github.com/borisyankov>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
@@ -418,7 +418,7 @@ declare namespace d3 {
 
             select(name: (datum: Datum, index: number, outerIndex: number) => EventTarget): Selection<Datum>;
             call(func: (selection: Enter<Datum>, ...args: any[]) => any, ...args: any[]): Enter<Datum>;
-            
+
             empty(): boolean;
             size(): number;
         }